图像未在Flutter中的Carousel滑块上正确加载

Question

我不知道滑块中的此图像加载有什么问题，我还认为这与调试有关，但是发行版存在相同的问题，总体上所有图像加载缓慢并且有一些延迟，但是问题更严重。

Container(
                margin: EdgeInsets.only(top: Platform.isAndroid ? 85.0 : 115.0),
                child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      CarouselSlider(
                          aspectRatio: 1.1,
                          viewportFraction: 0.6,
                          initialPage: 0,
                          enlargeCenterPage: true,
                          reverse: false,
                          autoPlay: false,
                          enableInfiniteScroll: false,
                          scrollDirection: Axis.horizontal,
                          onPageChanged: (index) {
                            if (!mounted) return;
                            setState(() {
                              _current = index;
                              SystemChrome.setEnabledSystemUIOverlays(
                                  [SystemUiOverlay.bottom]);
                            });
                          },
                          items: [
                            slides("words", "assets/images/Academic_Words.jpg", "Academic\n   Words", MyAppWords()),
                            slides("writing", "assets/images/writing.jpg", "Academic\n   Writing", MyAppWriting()),
                            slides("conference", "assets/images/conference.jpg", "Academic\nConference", EnterPhone()),
                            slides("conversation", "assets/images/conversations.jpg", "Academic\nConversations", null),
                            slides("correspondence", "assets/images/correspondence.jpg", "Academic\nCorrespondence", MyAppCorrespondence()),
                          ].map((imgUrl) {
                            return Builder(
                              builder: (BuildContext context) {
                                return Container(
                                    width: MediaQuery.of(context).size.width,
                                    alignment: Alignment.center,
                                    margin: EdgeInsets.symmetric(
                                        vertical: 20.0, horizontal: 9.0),
                                    decoration: BoxDecoration(
                                        borderRadius:
                                            BorderRadius.circular(48.0),
                                        boxShadow: [
                                          BoxShadow(
                                            color:
                                                Color.fromRGBO(50, 50, 50, 1),
                                            blurRadius: 5.0,
                                            // has the effect of softening the shadow
                                            spreadRadius: 5.0,
                                            // has the effect of extending the shadow
                                            offset: Offset(
                                              -1.0,
                                              // horizontal, move right 10
                                              8.0, //
                                              // vertical, move down 10
                                            ),
                                          )
                                        ]),
                                    child: ClipRRect(
                                      borderRadius: BorderRadius.circular(48.0),
                                      child: imgUrl,
                                    ));
                              },
                            );
                          }).toList()),
                    ]),
                decoration: BoxDecoration(
                  borderRadius:
                      BorderRadius.vertical(top: Radius.circular(48.0)),
                  color: Color.fromRGBO(237, 237, 237, 1),
                ),
              ),
            ]);
          },
        ));

  }

   slides(String _tag,String _asset, String _title, Widget myF ){
    return GestureDetector(
      child: Stack(
        fit: StackFit.expand,
        alignment: Alignment.center,
        children: <Widget>[
          Hero(
            tag: _tag,
            child: Image.asset(
              _asset,
              fit: BoxFit.cover,
            ),
          ),
          Container(
            decoration: BoxDecoration(
              gradient: LinearGradient(
                colors: [
                  Colors.black45,
                  Colors.black54
                ],
                begin: Alignment.topLeft,
                end: Alignment.bottomRight
              ),
            ),
          ),

          Container(
              alignment: Alignment.center,
              child: Text(
                  _title,
                  style: TextStyle(
                      fontSize: 20,
                      color: Colors.white,
                      fontWeight: FontWeight.w400,
                      fontFamily: "Raleway"),
                ),
              )
        ],
      ),
      onTap: () => Navigator.push(context,
          MaterialPageRoute(
              builder: (BuildContext context) {
                return myF;
              })),
    );
  }

这是我的问题的演示=> http://uupload.ir/view/k2ub_video_2019-10-22_10-14-47.mp4/