Been hearing some word about Musicoin being more profitable to mine on Claymore than ETH, any confirmations of this?

Best alt to dual mine with would be? Currently mining SC, but sure doesn't look profitable haha

Looking for some input.

Been running a rig (z270, i6700, 16GB ram - have a separate mining rig as well) with a 1070 and 3 1050Tis. It had been running for a solid  month or two with no issues, and was running for about a week straight until Aug. 8 when I got home from vacation and turned it off and then when I turned it back on it updated Windows 10 Home.

Now ever since that day if I try to run all 4 cards at once (not overclocked at all) it will lock up and freeze the display and cause a restart eventually. I can run 3 of the cards fine, but a 4th causes it to crash. I've tried every card individually, tried sets of 3 and all work and can be overclocked, set the virtual memory to 16GB, even did a fresh install of Windows and the drivers.

For whatever reason, I cannot get the 4th card to work (when it had been for over a month) and it's driving me mad. The log files don't help either as it just shows below. Occasionally I get the temperature error, but GPU-Z shows the cards all running at low temps (55-65C).

18:17:59:584   b54   ETH: job is the same
18:17:59:584   b54   new buf size: 0

I have another rig running that has no updates set so it's been stable for a month as well, but this one I don't run all of the time and I feel like it has to be something with the 8/8 Windows Update KB4034674. Any ideas what might be going on?

*Edit - I've used all different versions of Claymore v9.3-9.8 without any difference as well. I've tried the various commands to stabilize the miner as well, nothing works.