Kolkata to New Delhi in a Dreamliner Microsoft Flight Simulator 2020 : Autopilot bugs Boeing 787-10

This was my first full flight in Microsoft Flight Simulator 2020. Set up the Dreamliner on an IFR flight from Netaji Subhash Chandra International Airport, Kolkata VECC to Indira Gandhi International Airport, New Delhi VIDP. Noticed a few serious glitches with Boeing 787-10 Dreamliner Autopilot and FMC setup.
1. I can request fuel as per my needs but cant set up the block fuel in FMC. It remains constant at 121.6.
2. I dont see the take-off trim to be calculated.
3. Enabling VNAV, even though I have set the cruise altitude to FL380 in MCP after engaging Autopilot VNAV would take the aircraft to the FMC altitude for the first waypoint and simply get stuck there. For eg if waypoints 1,2,3 have altitudes FL100,FL120,FL130 respectively VNAV would take the plane to FL100 and stop there.
4. The aircraft struggles to keep itself properly aligned on the route path. It follows the path properly no doubt but doesnt fly straight. It constantly overshoots the purple line and keeps banking left and right the entire flight.
5. Distance between 2 waypoints shown in the FMC is complete rubbish. If the actual distances are 54nm,72nm,67nm etc as seen from the instrument display map the same distances on the FMC show up as 770nm,645nm,589nm whereas the entire flight range was 771nm.
6. VOR LOC and APP doesnt seem to do their best on final approach.
7. Using flaps on the final approach destroys the attitude of the aircraft and it kinda flies in a nose down tail down manner which looks weird.

Link to my PC build : https://youtu.be/wxDFOAwcJLU
Link to other MFS2020 videos :
https://youtu.be/hHtLh8FBCiE
https://youtu.be/vaiz2-GQms4
https://youtu.be/dNHtyQKwJhQ
https://youtu.be/QxJRFdYSgzc
https://youtu.be/Lt53G-KPXVM
https://youtu.be/ccb34dY0_sw
https://youtu.be/NRgKsW59HwI
https://youtu.be/jH6-wQyTcvc
https://youtu.be/bmQPmelDbJ4
https://youtu.be/xp4bOQUiMQ4
https://youtu.be/PSn6Me-_3MY

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