StarTech.com DisplayPort to HDMI VGA Adapter - DP 1.2 HBR2 to HDMI 2.0 (4K 60Hz) or VGA 1080p Converter Dongle - DP to HDMI or VGA Monitor Adapter - Digital Video Display Adapter (DP2VGAHD20)

What you're seeing is the break off of displays that support 15khz (240p) horizontal scanrate and displays that support 31khz+ (480p+ horizontal scanrate. Ill just refer you to this retrorgb article.https://retrorgb.com/downscaling.html another option is to just get a crt computer monitor instead of a tv. and get this asapterhttps://www.amazon.com/dp/B0849FTBXQ?ref=ppx_pop_mob_ap_share tldr; you should just return cheap onn converter. even if it did work. the delay is probably unbearable.