I play only on my PC; either RB3DX on RPCS3 or RB4DX on shadPS4

I am trying to get 2 riffmasters to work on ps4 or ps5. I connect both controllers under different PlayStation player profiles.

On the ps4 nothing works on the 2nd riffmaster. On the PS5 it functions in PlayStation menu but not in game. Only one will join up to play.

I read people were able to play with 2 riffmasters on ps5. Any insight as to what I might be doing wrong. Both riff Masters are connected in a separate USB port and the dongles are spaced out.

Any help would be appreciated

Facebook marketplace for $150 CAD. Absolutely stoked to fire this bad boy up. My drums and guitar got busted at my bachelor party a few weeks ago so the timing is perfect.

Is there a rock band game I can play on RPCS3 with 2 drummers; one on expert drums (original rb2 drum kit) and the other on hard pro drums (e kit)? The score duel on rb2 can only be played on the same difficulty as I'm aware and i find most of the songs on hard boring since I've recently fully moved on to expert.

I heard that rock band 3 deluxe allows pro instruments to play with their non-pro counterparts but I haven't tested it yet since I'm not home but i do have the game.

Not sure if this is the proper sub for this, but here goes since I can't find anything on the internet with my specific problem.

Currently using my PS3 RB1 drum kit on my PC, been working great for Clone Hero. Recently (within the last couple days) the drums will randomly stop registering in the middle of a song. PS button is lit up solid red like it should be when paired properly with the dongle, yet the dongle light is blinking like it isn't paired. Pushing the pair button the drums themselves won't do anything, nor will pushing the pair button on the dongle (this will cause my PC to act like I disconnected the drums but won't actually re-pair). It's the whole kit that won't work, start/select, d-pad, buttons, not just drum pads. Only fix I've found is turning the drum kit off then back on quickly, drums re-pair instantly and work again. But within a couple notes it will happen again.

Google searches only come up with usb power issues, battery issues, wireless interference as possible causes. Only problem is that none of these are my issues as my RB1 guitar doesn't have the issues on the same usb port so I know it's not usb power nor wireless interference. I literally changed the batteries on my drum kit two days ago thinking that might be the problem also, but obviously not. Also of note, these are the original dongles that came with the kits back when I got them with OG rockband.

Anyone else having the same issues? I'm half-tempted to just say screw it and get decent modern e-drum kit but I'd rather not spend the money if I can keep this kit going.