Note - as far as I know there are no covid19 CPU based works units, so you will continue to get normal work units if you have CPU slots available. This is worth mentioning, because by default the client adds your CPU to the available slots. On linux you have to go into advanced settings to enable the GPU at all, so it is something to watch out for.
If you have the time to contribute reliability patches to the Linux clients, I'm sure it would be appreciated as well.
[1] https://github.com/FoldingAtHome/fah-issues/issues/1193#issu...
But current the covid19 page (last updated mar-10) has the following statement: "All projects are using the new GPU-accelerated Core22 based on the open source OpenMM biomolecular simulation engine."