New RAXE290 causes severe lagging while playing PS5

New RAXE290 causes sever lagging while playing PS5.

when i play Call of duty online i get severe lagging / packet loss whether i run it on wifi or lan. seems like it is blocking connection every 15 seconds or so.  Everything else in house works great. speed test shows 496mbs down 55mbs up. i cant figure it out. if i connect PS5 direct to cable modem no issues at all. If i use my old wifi router no issues at all.  any suggestions on what to change in router ?