I was in the same boat after buying 3 years of GP and converting to GPU for a quid at the end of last year. I searched for days for a solution - which ended up being an upgrade to 1909 Enterprise (stupid GP/UWP app requirement ). I also had the incentive of being invited to the FS2020 Alpha which made the decision to leave LTSC behind a much easier one. Will switch back when my GPU runs out as I doubt there will be another £1 deal.