A Gigabyte motherboard, an AMD Ryzen 9 5950X processor, 32 GB of fast RAM and a Samsung 980 Pro NVMe SSD. I already had a used graphics card acquired from another friend, which I have not used before, an EVGA 1070GTX. The power supply is a new Corsair 750W jobbie, in case I need one of these power hungry and expensive high end cards, which apparently many people with beautiful signals are not needing...
Whilst for many things this new PC is blisteringly fast, for the purpose I built it, it seems pretty terrible...

If I TX using DATV-Easy V1.25 I can just about manage a stutter free H264, but it's far from perfect, with drop outs et cetera. Trying H256 the results are dire, with many seemingly random drop outs and freezes. OS is Windows 10 64 bit pro. I used Task Manager to look at performance levels and I see the odd graphics gliitch, although graphics usage is generally very low, usually under 11%. Ethernet is similar, the odd glitch but generally looks effortless.
I see the writer of DATV-Easy warns against expecting perfection with a Pluto at the dish, on a LAN with a LAN to USB converter to the Pluto. This is in fact my set up. PC in the shack, about 25 to 30 feet quality LAN cable to the box under the dish. LAN to USB ("Pluggable" brand) converter. Pluto -- AD pre amp -- SG Labs 20W PA. Big PF Andrew dish, POTY fed by short LMR400 co ax.
Porstsdown 4 fares much better and seems to be as it was with my old clunker low spec i5 PC, but I assume, as I am pretty naff with PC stuff, that's as expected as the main PC is doing very little, and it's the Raspberry Pi that is doing the lifting?
I was looking forward to H265 with few to no glitches but find myself in the embarrassing postion of "all the gear, no idea". Help please, how do I begin trouble shooting? I don't want to keep throwing stuff at this problem. blindly.
I discovered the afore unknown to me addition to Minitioune software, the Data Reader software. I set up a TX of a video on my PC in MP4 format, using DATV-Easy V2.5 set to NVIDI encoding in H265 and the 1070GTX card, and set data recording going. It shows glitches, as and when the drop outs occcur, but I am not technically adept enough to begin to know if it helps dioagnose the issues, or even if it's a suitable tool? In case it is able to throw useful light, I will attach the last data file. I also attach a glitch as seen in Windows Task Manager.
I appreciate any suggestions to efficiently diagnose what's occurring, thanks. If I was to blindly guess, I would say I suspect either the ethernet to USB stuff, or the graphics card itself, or its set up is faulty / wrong. But hey, I am a glorified mechanic, not a video engineer

One other, possibly totally unrealted thing I find strange is when, for example, i was watching someone in Wales TX'ing before yesterdays World Wide DATV net, on the Minitioune receiver his lip sync was totally out, and the picture breaking up, but if I set the Minitione software to send a UDP stream, he looked and sounded perfect using VLC... What's happening there?
