No movement till 3500 RPM?

Issue: Car was running great Until 1 day I was driving home car would not drive from stop light it acted if it was in (N) I ran it thru all gears and nothing after a few times of revving it in (D) it seemed to engage and I was able to make it home where I noticed a whine coming from the transmission When I engaged it to (R) the noise was a pitch higher The next day I drove the car around the block and to the gas station car was driving fine except for the whine again coming from the trans after about 30 mins and on my way back home I lost all gears in the middle of acceleration I pulled of to the side of the road and waited about 15 mins started the car back up and drove it home again still noise but no hesitation no ruff shifts so I started my investigation started with linkage from firewall to trans and its perfect from there ive checked fluid they look and feel great its a light see thru red that is with car off I wanted to make sure pump was working fine so I continued with starting the car letting it run for 30 mins checking it multiple ways after warm up I did multiple checks with car in (N) (P) and everything looked fine smelt fine felt fine and level was perfect so I ran the car thru the gears until I felt it stop engaging like before my thought being the pump decides to crap out after it gets hot let it run for another 10 to allow any fluid changes and still finding that the fluid looks fine level fine Only difference now is that I see bubbles and the whine is alot more quite so before I tear in to the trans to investigate more. Any ideas? Is it just the air causing this? There no leaks I havent flushed or changed oils either and what could the whine be if not the pump?As I was messing around I started the car again and let it go thru its cycle again till I lose all gears again but today I thought I would just rev it in drive see what it does and at around 3000-3500 rpm it actually starts to rotate the tires I had it on jacks so I dont have any clue if it would support the weight of the vehicle and pull obviously I wouldn't try driving the car like that but would this help narrow it down at all? To me it still sounds like the pump or as u said pressure as far as I know if a torque converter is not functioning its not going to move period right?