Attached is a small portion of a circuit I'm working on. The goal is to get an output, to be amplified later, that slowly rises to the setpoint (V1) over some time. V1 is also supplied from an opamp in a different part of the network. This has been working perfectly in LT Spice simulation but not on the PCB. Instead, it charges up to the setpoint within milliseconds where the simulation shows around 60 seconds until full charge. I've checked the traces and everything is connected correctly on the board so I'm thinking something here could be impacting my time constants and just isn't being considered by the LT Spice program given that all my components are ideal. Any thoughts on what's going on?
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