Thank you, new version doesn't crash video players anymore. Also EA Origin's in-game overlay works again.
*edit* In 5.3.8, memory clock shows 0mhz in Mass Effect 3 and GTA V, both in OSD and in monitoring graphs in the app... Everything seems to be fine though, no oddities. <--*edit* After a loading screen or alt-tabbing is when the memory clock seems to drop to zero in both OSD and monitoring graph. Reloading a save in ME3 fixes it, until the next loading screen or alt-tab. I seriously doubt the memory clock is actually dropping to zero, it would definitely cause a problem.
*edit* OK it's happening in GTA V if I alt-tab out of the game. Running in borderless window mode, that might be relevant. After exiting the game, memory clock still shows 0mhz until I clear history on the monitoring graphs. *edit* Just tried this further... Now I'm seeing in ME3, walking to areas where there's very little graphics to load, the memory clockspeed being monitored shows 0mhz, then it goes to 810mhz and then back up to 3005mhz. In GTA V, it'll stay stuck on 0mhz, though there seems to be nothing wrong, as the game continues to run perfectly. That's where I have to go to clear history on the graphs and it shows 3005mhz again. I also see the 3005mhz to 0mhz to 810mhz if I open and close my browser. Not sure if this is normal or not, but everything seems to be working fine. GTA V reaches 79C under full load, but this card's always run very hot with the reference cooler.
Also in GTA V with OSD, sometimes the framerate incorrectly shows 29 fps. There's a noticeable smoothness only at 60+ fps, and when it shows 29 fps it still looks like 60fps.
Also if I have the Fan Curve graph open, after closing it it won't open again, unless I pick a different fan profile or back out of the fan options. <--This issue was in 5.3.7 version as well.