Fix #9895: standup coaster gets incorrect intensity boost from synchronisation

distribution/changelog.txt

@@ -4,6 +4,7 @@
 - Improved: [#25530] Wall dragging can now be cancelled without closing the Scenery window.
 - Improved: [#25575] Updated the network protocol to a new format that supports larger packets, allowing clients to connect reliably to servers with many objects or large maps.
 - Change: [#25485] Make the enlarged pressed swatch sprite more pronounced.
+- Fix: [#9895] Stand-up coaster gets wrong intensity boost from the synchronisation bonus.
 - Fix: [#22484] Lingering ghost entrance after placing park entrance.
 - Fix: [#24952] Duplicate track designs when running via Steam without having RCT1 linked.
 - Fix: [#25524] The track construction arrow does not immediately change position when deleting track pieces.

src/openrct2/network/NetworkBase.cpp

@@ -47,7 +47,7 @@
 // It is used for making sure only compatible builds get connected, even within
 // single OpenRCT2 version.
 
-constexpr uint8_t kStreamVersion = 2;
+constexpr uint8_t kStreamVersion = 3;
 
 const std::string kStreamID = std::string(kOpenRCT2Version) + "-" + std::to_string(kStreamVersion);
 

src/openrct2/ride/rtd/coaster/StandUpRollerCoaster.h

@@ -67,7 +67,7 @@ constexpr RideTypeDescriptor StandUpRollerCoasterRTD =
         false,
         {
             { RatingsModifierType::BonusLength,           6000,             764, 0, 0 },
-            { RatingsModifierType::BonusSynchronisation,  0,                RideRating::make(0, 40), RideRating::make(0, 10), 0 },
+            { RatingsModifierType::BonusSynchronisation,  0,                RideRating::make(0, 40), RideRating::make(0, 5), 0 },
             { RatingsModifierType::BonusTrainLength,      0,                187245, 0, 0 },
             { RatingsModifierType::BonusMaxSpeed,         0,                44281, 123987, 35424 },
             { RatingsModifierType::BonusAverageSpeed,     0,                291271, 436906, 0 },