I don’t have or use any gamepads with my phone so can’t comment on that directly, but have had no problems with BlueTooth headphones. Both the Apt-X and LDAC codecs are functioning perfectly.
RR-O-v6.1.0-20180615-kltedcm-Unofficial has been running great for me! Just updated to RR-O-v6.1.0-20180617-kltedcm-Unofficial, but my SIM card is not being seen, so no mobile service. Going back to RR-O-v6.1.0-20180615-kltedcm-Unofficial.