Lute drawdown frames on a laptop

Welcome, forum residents. We need your help. I'll try to explain everything in a nutshell, connect the laptop (i3-8145U, Mx130 2gb, RAM 8gb) to the LG 50UN81 TV via HDMI cable to play on the couch. Just fine, but in any game there are drawdowns to EXACTLY 30 frames, in Tomd Rider 2013 is held in the area of 80-90 and at one point sags up to 30 frames for about 4-5 seconds and rises again to 80 frames, play is simply impossible. Out of interest put the most minimal settings of graphics with resolution, the same trouble, the system is almost not loaded, but constantly sags up to 30 damn frames and rises again. In setting up the displays put the resolution on both screens 1920s1080, everywhere shows 60 Hz. HDMI cable 2.0, tried 3 more cables that are at home, the problem does not go away. Rolled back and updated wood on Intel Graphics because the displays are connected to it, to the nvidia apparently on this note is impossible. What could be the problem? I've been dancing with the tambourine for a week, and I've tried a lot of stuff. On the old Full HD TV by the way, everything was OK with the same system settings, mb thing in 4k? Although I kind of put Full HD in setting up the displays. I forgot to clarify that when the TV is disconnected from the laptop everything comes back to normal...