Not directly relevant, but I believe you will have issues with playback by toggling Directshow in this case. I've had the best playback by setting LAV Filters to DXVA (native) and always having Directshow off. Because I believe putting on Directshow will force your PC to go into software decoding for the video and that tends to be sluggish for videos over 4K.
Hardware wise, even as low as the GT 1030 can play h.265 and VP9 files up to 8K resolution so you shouldn't have major issues with most current videos with your setup. Most of the current video cards only decode h.264 files up to 2048p or 2160p I believe so I would suggest h.264/AVC files only up to 2048p and then h.265/HEVC (and VP9 if available) files at any resolution for best playback (especially for playing off a local drive, streaming from a site might be different).
Although your main issue at hand (video jumping) might be unrelated to filter settings. I'm not familiar with VP9 errors but just wanted to add a little bit to the LAV Filter/Directshow info brought up. Hope things work out.
