Dear Age of Empires development team,
first of all I’d like to thank you for remastering this game such perfectly (I love the new animations, graphics and audio) 
Unfortunately I’m suffering from heavy frame rate drop when playing the game (e. g. first mission in the learning campaign) on my PC or on my notebook. Clean install of Windows didn’t help. I’ve updated the game to the latest available version 101.101.34223.0 4509956.
PC specifications
Hardware
Mainboard: MSI P35 Neo
CPU: Intel Core 2 Duo E7200 @ 2.53 Ghz
Memory: 6144 MB RAM
Graphics: ATI Radeon HD 5850, 1024 MB GDDR5-RAM
SSD: Toshiba THNSNH, 512 GB
Software
OS: Windows 10 Home 64-bit (Build 18363)
Resolution: 1280 x 1024 @ 60 Hz
DirectX-Version: DirectX 12
Notebook specifications
Hardware
System Model: Asus N61Ja
CPU: Intel Core i5 @ 2,4 Ghz
Memory: 4096 MB RAM
Graphics: ATI Mobility Radeon HD 5730, 1024 MB DDR3-RAM
Software
OS: Windows 10 Home 64-bit (Build 17763)
Resolution: 1280 x 720 @ 60 Hz (on TV screen)
DirectX-Version: DirectX 12
I know these specifications aren’t high-end. But Age of Empires 1 Definitive Edition was already running smoothly on my PC. And since both games use apparently a very similar (if not the same) engine there might be a different reason for my performance issues.
So I made a blank test map. It runs smoothly at 35-60 fps. But when just placing 8 (!) trees on the map the frame rate already drops to 15-20 fps. When placing 1 cathedral the frame rate drops to 10-15 fps. Interestingly, though, when pasting up the whole screen only with flames (or someting else lacking shadows) the frame rate is about 35-60 fps.
In conclusion, there might be a problem with shadow rendering? 
Is there a way to disable shadows for testing purpose?
Best regards,
Chris