diff --git a/linux/devices/AcsBoardPolling.cpp b/linux/devices/AcsBoardPolling.cpp
index 6a16d816..4742910d 100644
--- a/linux/devices/AcsBoardPolling.cpp
+++ b/linux/devices/AcsBoardPolling.cpp
@@ -105,7 +105,6 @@ ReturnValue_t AcsBoardPolling::sendMessage(CookieIF* cookie, const uint8_t* send
       return returnvalue::FAILED;
     }
     auto* req = reinterpret_cast<const acs::Adis1650XRequest*>(sendData);
-    MutexGuard mg(ipcLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
     if (req->mode != adis.mode) {
       if (req->mode == acs::SimpleSensorMode::NORMAL) {
         adis.type = req->type;
@@ -135,7 +134,6 @@ ReturnValue_t AcsBoardPolling::sendMessage(CookieIF* cookie, const uint8_t* send
       return returnvalue::FAILED;
     }
     auto* req = reinterpret_cast<const acs::GyroL3gRequest*>(sendData);
-    MutexGuard mg(ipcLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
     if (req->mode != gyro.mode) {
       if (req->mode == acs::SimpleSensorMode::NORMAL) {
         std::memcpy(gyro.sensorCfg, req->ctrlRegs, 5);
@@ -154,7 +152,6 @@ ReturnValue_t AcsBoardPolling::sendMessage(CookieIF* cookie, const uint8_t* send
       return returnvalue::FAILED;
     }
     auto* req = reinterpret_cast<const acs::MgmLis3Request*>(sendData);
-    MutexGuard mg(ipcLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
     if (req->mode != mgm.mode) {
       if (req->mode == acs::SimpleSensorMode::NORMAL) {
         mgm.performStartup = true;
diff --git a/linux/devices/Max31865RtdPolling.cpp b/linux/devices/Max31865RtdPolling.cpp
index 004e7c60..e9053af7 100644
--- a/linux/devices/Max31865RtdPolling.cpp
+++ b/linux/devices/Max31865RtdPolling.cpp
@@ -26,6 +26,7 @@ ReturnValue_t Max31865RtdPolling::performOperation(uint8_t operationCode) {
   using namespace MAX31865;
   ReturnValue_t result = returnvalue::OK;
   static_cast<void>(result);
+  // Measured to take 0-1 ms in debug build
   // Stopwatch watch;
   if (periodicInitHandling()) {
 #if OBSW_RTD_AUTO_MODE == 0