I had two Beloaders, got sick of its finnicky performance, tried everything got sick of it, this coming from a very techie guy get rid of it.
Thanks to apex_vip got PSRC on my Rasberry Pi, plug it forgot it... literatelly, to the point where I moved temporatelly far away, took my PS5, XIM and peripherials with me - but forgot the raspberry pi XD.
Fortunatelly I find one on an local electronic store and build a second PSRC module. - ZERO issues, no lag, closest to play native.
OP about your issues sorry, that's sound an issue related to network handkshake.
Before blameming XIM, try by plug in PS4 controller directly to Beloader first and start to troubleshooting from there. Make sure you are running the last firmware, or reflash it.
I don't fellas, I know was with good intentions Od1n put the tutorials for Beloader to help out owners, but miscalculated now XIM forum looks more like a Beloader Support.
Not putting on Od1n, you all belaoder owners PLEASE understand, if you have an issue with Beloader, go to Beloader support, posting belaoder support related threads over and over, is killing XIM community interaction and taking off Beloader brand the responsability of support its device as they should.
Beloader doesn't sees XIM diferently than any other third party controller or even an official discontinued PS3 / PS4 device.