As the designer noted - this is not a toy. Unfortunately all youtube videos use it as a toy. Flying fast as possible, up in space, reaching millions of feet. It does not belong up there. msfs is based on aerodynamics with airflow and air pressure. Quasar behavior seems it is full of serious bugs and unplayable. It is not.
Respect cruise speed at 130 000 ft Mach 7.8 , and max Mach 3 at lower altitude.
Quasar is truly Science Fiction. Science as it is based well known technology use today. Hydrogen as fuel. Extract hydrogen from air/moisture. Nuclear energy to provide enough electrical power for this process. Still Fiction , but designers but a lot of effort to make it plausible. I am not sure about aerodynamic design - but with enough power a table will fly. I accept it, but main gear seems to be too back and close to flight surfaces to generate rotation at TO. But with Vr at 350 knots anything goes.
Initial view setup is crucial for Garmin screens. Reaching zoom knob on left screen while watching map on right screen is important. Fortunately Chaseplane camera (ms2020) helps.
All youtube guys hand fly - this is extremely difficult. Using Garmin 3000 and autopilot, you really need experience to use it, but is mandatory for a satisfactory flight from A to B .
Setup - do not use preselect altitude. Set HDG to rwy heading and activate. Set VS to approx + 6000 ft/min.
After TO engage AP. Turn HDG to intercept magenta GPS line. Keep speed around Mach 2 - higher and turn radius will be larger than Texas.
Enjoy the flight and be patient while climbing. Check Mach number on lower left panel, and respect Mach limitations at different altitudes. Plane start to shake and wobble; Disconnect AP , trim reduce speed and connect AP again. - At 100 000 ft AP may struggle with reverse controls. Disconnect and trim as necessary (no stick input) for a level flight.
Go outside and enjoy the heat glow created by hypersonic speed.
Be patient when descending. Use VS and watch your speed. I aim for 40 000 ft at Mach 2.5 as initial normal flight.
Now select a STAR or approach as normal. Preselect VNAV . Garmin my struggle with TOD - when active, use advisory ft/min on VNAV page, and set VS accordingly
Not be surprised when 40 min flight is increased by 1 hour due to wide turns. Use speedbrake to drop speed below Mach 1 for a better turn radius.
Approach - turn off electrolizers to stop hydrogen production - you need to burn off fuel from tanks to make the ship as light as possible.
Final approach (faf) - shut down engine 2 and 3 . When stable reduce speed to 250 knots and deploy speedbrakes when passing fence.
Note to designers: Quasar seriously needs a huge dragchute with auto deploy at touchdown.
Thanks..