Forgive my ignorance, but how are you connecting the amp to your PS5?
I use the subwoofer channel method (for now). My PS5 is connected to my TV (TCL 55R635) directly via HDMI so I can use VRR and 120hz and get the least amount latency, same thing I do with gaming PC. Then using eARC (audio return channel) HDMI out to my home theater receiver (Yamaha RX-A880). Subwoofer out (RCA cables) goes to a sub (Polk Audio PSW10) that has a low level channel out which I connect to an external amplifier (SA100 100W Subwoofer Plate Amplifier), which then connects to the tactile transducers ( 2 x 50 watt 4 Ohm AuraSound AST-2B-4 Pro in series for 8 Ohm load).
That way I can run with PSVR2 and turn down the gain of the subwoofer if I want the room more quiet, and crank sub level output on receiver and raise gain on bass shaker amp for precise control of level and also crossover cutoff that the bass shakers see. There's a cross-over and gain knob on front of Daytona amp.
Funny thing is this works in GT7 with PSVR2 even with the headphones going because I still get audio out on the receiver. But if using the PSVR2 as a flat screen for a non-VR game it doesn't work, as I get no audio from receiver if using PSVR2 headphones. Maybe that is game specific not sure. Some games have no aidio options like GT7 does.
There can also be a slight delay in bass shaker signal with this setup because of delay caused by TV when using eARC. I minimized that by selecting options in the TV sound properties and receiver options and in-game GT7 audio options. Using DTS out in GT7, "straight" as opposed to processing 7.1 signal on receiver, and "pass-through" on HDMI PS5 input option on the TV. This will all vary with different brands I am sure. I did get it working with PSVR2 in GT7 although and I wasn't sure it would work especially when using PSVR2 earbuds.
Another option is not using earbuds, but in VR I use the earbuds and 3D audio. Feels off when only using home theater speakers but it would work like that too.
The advantages with this setup is simplicity and also bass shakers work in any game, PC games, movies, and any content on my home theater which is cool. Downside is you don't get those individual controls for which effect go to each bass shaker, etc.. So it is inferior to using SimHub. But.. lots of games seem to use the sub channel properly and it works a lot better than you might imagine. GT7 seems to have bass hit at the appropriate times for hitting a bump in the road or curb, or another car, landing a jump, etc.. Even the engine vibs come through if you adjust the cross-over point and gain on amp. So when you get the force feedback in the wheel, bass shakers, and the PSVR2 headset all vibing at the same time, it really adds a lot to the experience. If I forget to switch on my bass shaker amp, it feels dead and lifeless to me even if I don't instantly realize what the problem is. It makes a big difference, especially in VR. I really couldn't enjoy racing in my sim rig without it now that I know what it's like.
