梦幻西游手游花屏，卡住报错。

新配置的电脑，新装的系统，搭载amd rx480显卡，多开玩梦幻西游手游开十几分钟就会出现花屏，闪屏，卡死等现象。看CPU 和GPU占用率 在百分之50左右。用N卡就没事，请求解决，换了另外一个 RX480还是这样，排除显卡本身有毛病，求指点如果解决。
诊断信息如下：
操作系统：Microsoft Windows 10 64位
CPU型号：Intel(R) Xeon(R) CPU E5-2678 v3 @ 2.50GHz
总内存：31.8 GB
可用内存：28.0 GB
显卡型号：Radeon (TM) RX 480 Graphics (20190808)
OpenGL：4.6.13570 Compatibility Profile Context 19.8.1 26.20.13001.29010
IE版本：11.0
模拟器版本：3.69
模拟器路径：D:\ChangZhi\dnplayer2
日志路径：C:\Users\Administrator\AppData\Roaming\ChangZhi2\log
vt:开启
运行参数：CPU(1核) 内存：(2048M) 正在运行(1) 高速(1)
分辨率：1024x768 dpi 240 fps 20
总大小3 G，剩余1 G

我看了日志内容日志报错如下：
08-26 00:06:53.534 14164 view::DNLaunchADImpl::downloadGameImage (709):start download image
08-26 00:06:53.534 9696 utility::process::shell (11):shell filename = [D:\ChangZhi\dnplayer2\adb.exe], param = [connect 127.0.0.1:5573], runas = 0, show = 0
08-26 00:06:53.538 7892 view::AppModel::checkAvastExist::::operator () (852):Avast is exist ? 0
08-26 00:07:07.344 9696 CPlayerImpl::onAppActive (933):player onAppActive name = com.netease.my version = 15988284
08-26 00:07:08.162 9696 CPlayerImpl::onAppActive (933):player onAppActive name = com.netease.my version = 15988284
08-26 00:15:16.525 3780 vbox::VBoxService::_threadProc (111):WinPipe Recv failed!, connect closed.
08-26 00:15:38.490 9696 utility::RegKey::RegRegOpen (19):open reg lastError = 0
08-26 00:15:38.491 9696 utility::RegKey::RegRead (78):read reg lastError = 0
08-26 00:15:38.491 9696 DNPCInfoFrame::InitWindow (83):current gpu is Radeon (TM) RX 480 Graphics
08-26 00:15:38.511 9696 webbrowserhelper::registerIENewVersion (71):registerIENewVersion
08-26 00:15:38.512 9696 webbrowserhelper::registerIENewVersion (130):ie version 11001
08-26 00:15:40.078 9696 CPlayerImpl::onHandleWindowIPC (498):onHandleWindowIPC, msg = 49812