I often get this message: (own translation) There is a problem with a systemapplication.
do you want send that problem?
another second problem is, chrome or firefox lags:
But, this I had on Ubuntu 20.04 LTS too.
but not with -Deepin- or other different systems
Re the first issue.
Just click the send button to report the issue.
You can clear out old problem reports by
sudo rm /var/crash/*
As to the lag issue that is usually a graphics issue.
Check the graphics section in menu - about
If it says llvmpipe or nouveau that means software rendering or the slow opensource drivers. You need to install and/or configure your system with the appropriate proprietary drivers if available … again look in Menu - Hardware drivers
well, graphic card is: Mesa Intel® UHD Graphics 630 (CFL GT2)
in windows: Intel® UHD Graphics 630
What is the spec of your hardware - RAM & Processor ?
EDIT:
What resolution of screen are you using? 4K?
Firefox scrolling and video laggy when maximized at 4K on KDE Plasma Archlinux | Firefox Support Forum | Mozilla Support ← worth trying those settings for firefox
Acer Aspire XC-885
RAM: 8 GB
Intel® Core™ i5-8400 CPU @ 2.80GHz × 6
Resolution: 1920 x 1080