TwinCAT OPC UA: Setting individual Publish-Rate using Direct Access - plc

Question

I have configured a Twincat OPC UA server and need a fast cyclic data exchange of some variables (~400 bytes) with 1000Hz. If I set the publishing rate for all variables in the xml to 1ms, the CPU is 100% busy and the communication does not work. Is it possible to set the publishing rate individually via an attribute for example?
{attribute 'OPC.UA.DA' := '1'}
//{datarate := 1000Hz}
CriticalData : Struct_of_CriticalData;
//{datarate := 10Hz}
UncriticalData : Struct_of_UncriticalData;
{attribute 'OPC.UA.DA' := '0'}
<?xml version="1.0"?>
<OpcServerConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<UaServerConfig>
<MaxRequestAge>0</MaxRequestAge>
<MaxSessionCount>100</MaxSessionCount>
<MinSessionTimeout>10000</MinSessionTimeout>
<MaxSessionTimeout>3600000</MaxSessionTimeout>
<MaxBrowseContinuationPoints>0</MaxBrowseContinuationPoints>
<MaxHistoryContinuationPoints>0</MaxHistoryContinuationPoints>
<MinPublishingInterval>1</MinPublishingInterval>
<MaxPublishingInterval>0</MaxPublishingInterval>
<MinKeepAliveInterval>5000</MinKeepAliveInterval>
<MinSubscriptionLifetime>10000</MinSubscriptionLifetime>
<MaxSubscriptionLifetime>0</MaxSubscriptionLifetime>
<MaxRetransmitionQueueSize>10</MaxRetransmitionQueueSize>
<MaxNotificationsPerPublish>0</MaxNotificationsPerPublish>
<MaxDataQueueSize>100</MaxDataQueueSize>
<MaxEventQueueSize>10000</MaxEventQueueSize>
<MaxSubscriptionCount>0</MaxSubscriptionCount>
<MaxMonitoredItemCount>0</MaxMonitoredItemCount>
<MaxMonitoredItemPerSubscriptionCount>0</MaxMonitoredItemPerSubscriptionCount>
<AvailableLocaleIds>
<LocaleId>en</LocaleId>
</AvailableLocaleIds>
<AvailableServerProfiles>
<ServerProfileUri>http://opcfoundation.org/UAProfile/Server/StandardUA</ServerProfileUri>
<ServerProfileUri>http://opcfoundation.org/UAProfile/Server/DataAccess</ServerProfileUri>
<ServerProfileUri>http://opcfoundation.org/UAProfile/Server/Methods</ServerProfileUri>
<ServerProfileUri>http://opcfoundation.org/UAProfile/Server/EventSubscription</ServerProfileUri>
</AvailableServerProfiles>
<IsAuditActivated>false</IsAuditActivated>
<RedundancySettings>
<RedundancySupport>None</RedundancySupport>
</RedundancySettings>
<MinSupportedSampleRate>0</MinSupportedSampleRate>
<AvailableSamplingRates>
<SamplingRate>1</SamplingRate>
<SamplingRate>2</SamplingRate>
<SamplingRate>3</SamplingRate>
<SamplingRate>4</SamplingRate>
<SamplingRate>5</SamplingRate>
<SamplingRate>6</SamplingRate>
<SamplingRate>7</SamplingRate>
<SamplingRate>8</SamplingRate>
<SamplingRate>9</SamplingRate>
<SamplingRate>10</SamplingRate>
<SamplingRate>15</SamplingRate>
<SamplingRate>20</SamplingRate>
<SamplingRate>25</SamplingRate>
<SamplingRate>30</SamplingRate>
<SamplingRate>35</SamplingRate>
<SamplingRate>40</SamplingRate>
<SamplingRate>45</SamplingRate>
<SamplingRate>50</SamplingRate>
<SamplingRate>60</SamplingRate>
<SamplingRate>70</SamplingRate>
<SamplingRate>80</SamplingRate>
<SamplingRate>90</SamplingRate>
<SamplingRate>100</SamplingRate>
<SamplingRate>150</SamplingRate>
<SamplingRate>200</SamplingRate>
<SamplingRate>250</SamplingRate>
<SamplingRate>300</SamplingRate>
<SamplingRate>350</SamplingRate>
<SamplingRate>400</SamplingRate>
<SamplingRate>450</SamplingRate>
<SamplingRate>500</SamplingRate>
<SamplingRate>550</SamplingRate>
<SamplingRate>600</SamplingRate>
<SamplingRate>650</SamplingRate>
<SamplingRate>700</SamplingRate>
<SamplingRate>750</SamplingRate>
<SamplingRate>800</SamplingRate>
<SamplingRate>850</SamplingRate>
<SamplingRate>900</SamplingRate>
<SamplingRate>950</SamplingRate>
<SamplingRate>1000</SamplingRate>
<SamplingRate>2000</SamplingRate>
<SamplingRate>5000</SamplingRate>
<SamplingRate>10000</SamplingRate>
</AvailableSamplingRates>
</OpcServerConfig>
Any help would be appreciated ;)

Answer 1

It seems I found a solution myself by adding a MaxPublishingInterval greater than 0 in the Server-xml.
I am not sure, if it works, since now the PC is the limiting factor...
<MaxPublishingInterval>200</MaxPublishingInterval>