Had the same issue, resolved it the same way (using Manjaro). Can it be an issue on two-new platforms? My specs:
Operating System: Manjaro Linux
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
Kernel Version: 5.10.7-3-MANJARO
OS Type: 64-bit
Processors: 4 × Intel® Core™ i7-6600U CPU @ 2.60GHz
Memory: 11.6 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 520