No problems here....
I'm wondering if people are not turning the force VMM off if they have indeed enabled it. Sure the odd title takes longer to load but they DO work if all other needed variables are correct.
Infact, so far I have gotten every game I have tried that should work in MAME to work in MAMEoX, perhaps folks think you have fixed the entire game database of MAME and all titles now work

There's one thing I'd love to see you do to the GUI and that's to add your normal letter jump search routine. The high speed scroll is nice but a tad finicky, just pushing left or right to go up or down a letter is sooo much easier.
Saying all that I am grateful for your hard work and I'd rather see what time you thankfully spare on the emulators adding new and updated things rather than just time savers.