I’m developing iOS apps and R3 works fine with Xcode 9 but when I “Run” it takes noticeably longer to build the code before it launches the simulator. Admittedly, I’m using an underpowered Mac mini booting off an external USB3 SSD. Is this a result of the 64 bit debugging upgrade? Anyone else noticing this?
building does take time. especially the autosave before the run occurs. You can greatly improve that wait time by manually saving your work before you run or build.
I just benchmarked the performance of compiling iOS apps between Xojo 2017r2.1 and newer versions today.
You aren’t the only one to see this difference in performance.
On one of my projects:
Xojo 2017r2.1: 13 seconds to run.
Newer Xojo: 33 seconds to run
In a private conversation with Xojo, I was told that the 64bit compiler (LLVM) is slower than the old 32bit compiler (made by Xojo).
You can also improve compile time by setting the Optimization level to default
Xojo Navigator (left side) > Build Settings > Shared > Xojo Inspector (right side) > Build > Optimization level
As Louis says, you can also improve the speed by manually saving all open Xojo projects if they are dirty, prior to running or building your project.