Like Tony said,
WOW!
I had to stare at the picture for a few seconds for everything to register, and I've got to tell you I've never seen anything like that. Mighty impressive
I ended up buying this hardware HDMI
*recorder* from Amazon (this link is to the US site). Obviously you'd need 3 of them but you'd get full performance from your games rather than using precious CPU cycles to also record the action.
I bought my device to capture a single HD screen when doing video edits that took every last bit of power to run in real-time, and when PD14's screen recorder was running I couldn't get the smooth response I was trying to document. In your case, I'm certain that having hardware encoders would give you a noticeable improvement in frame rate.
One downside is that this device will only record at 30fps, but there are more expensive ones that can record at higher rates. Another possible issue is that you'll need to sync the 3 clips whenever you want to play them back or produce them, and if there's no monitor audio you'd need to do that manually. You'd also lose FRAPS' on screen fps meter, but that's also the case if you used PD14's screen recorder.
YouTube/optodata
DS365 | Win11 Pro | Ryzen 9 3950X | RTX 4070 Ti | 32GB RAM | 10TB SSDs | 5K+4K HDR monitors
Canon Vixia GX10 (4K 60p) | HF G30 (HD 60p) | Yi Action+ 4K | 360Fly 4K 360°